Home / 112,691.20-155,514.18-61,704.40

Finding the Fourth Proportional to 112,691.20, 155,514.18 and 61,704.40

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Solution

The fourth proportional to 112,691.20, 155,514.18 and 61,704.40 is: 85,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,691.20 : 155,514.18 = 61,704.40 : x
  2. Step 2: Convert to fraction form
    112,691.20/155,514.18 = 61,704.40/x
  3. Step 3: Cross multiply
    112,691.20x = 155,514.18 × 61,704.40
  4. Step 4: Simplify right side
    112,691.20x = 9,595,909,168.39
  5. Step 5: Solve for x
    x = 9,595,909,168.39/112,691.20
  6. Step 6: Final answer
    x = 85,152.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.